// entries in alternatingKeysAndValues that are still valid after rewriting to remove
    // duplicates; [2] a Builder.DuplicateKey that records the first duplicate key we encountered
    // for possible later use in exceptions, perhaps straight away.
    Object hashTablePlus = createHashTable(alternatingKeysAndValues, n, tableSize, 0);
    Object hashTable;

   * implement shutdown and termination behavior.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is
   * implemented as "no-effort". No interrupts or other attempts are made to stop threads executing

 * that the plugins/mojos can be used in arbitrary contexts. In particular, the mojos can be used for ordinary build
 * plugins as well as special purpose plugins like reports.
 *
 * @since 3.0
 */
@Named
@Singleton
public class DefaultMavenPluginManager implements MavenPluginManager {

    /**
     * <p>

            throw new UnresolvableModelException(e.getMessage(), groupId, artifactId, version, e);
        }

        return new ArtifactModelSource(pomArtifact.getFile(), groupId, artifactId, version);
    }

    record Result(ModelSource source, Parent parent, Exception e) {}

    @Override
    public ModelSource resolveModel(final Parent parent, AtomicReference<Parent> modified)
            throws UnresolvableModelException {

        //        defaultSession.getService(RepositoryFactory.class).createRemote()
        //        return defaultSession;
    }

    static class UnsupportedInStandaloneModeException extends MavenException {}

    record DumbPackaging(String id, Type type, Map<String, PluginContainer> plugins) implements Packaging {}

        if (threads <= 1) {
            executor = Runnable::run;
        } else {
            executor = new ThreadPoolExecutor(
                    threads, threads, 3, TimeUnit.SECONDS, new LinkedBlockingQueue<>(), new DaemonThreadCreator());
        }
    }

    private RepositorySystemSession getSession(ArtifactRepository localRepository) {

                }
            }
        }
    }

    private void validateRepositories(List<BuilderProblem> problems, List<Repository> repositories, String prefix) {
        Set<String> repoIds = new HashSet<>();

        for (Repository repository : repositories) {
            validateStringNotEmpty(problems, prefix + ".id", repository.getId(), repository.getUrl());

            validateBannedCharacters(

          .put(CharSequence.class, "")
          .put(String.class, "")
          .put(Pattern.class, Pattern.compile(""))
          .put(MatchResult.class, createMatchResult())
          .put(TimeUnit.class, TimeUnit.SECONDS)
          .put(Charset.class, Charsets.UTF_8)
          .put(Currency.class, Currency.getInstance(Locale.US))
          .put(Locale.class, Locale.US)
          .put(Optional.class, Optional.empty())

          .put(CharSequence.class, "")
          .put(String.class, "")
          .put(Pattern.class, Pattern.compile(""))
          .put(MatchResult.class, createMatchResult())
          .put(TimeUnit.class, TimeUnit.SECONDS)
          .put(Charset.class, Charsets.UTF_8)
          .put(Currency.class, Currency.getInstance(Locale.US))
          .put(Locale.class, Locale.US)
          .put(UUID.class, UUID.randomUUID())

            Object obj = cache.get(session, cacheKey);
            if (obj instanceof Record) {
                Record record = (Record) obj;
                result.setVersion(record.version);
                result.setRepository(
                        getRepository(session, request.getRepositories(), record.repoClass, record.repoId));
                return result;
            }
        }

        Metadata metadata;